Your main components are the same, sort of, the turbos supplied by RCC are bigger now than the old t3 super 60 that came with the ghetto, but its still a good turbo to around 300hp on a gen 2
Realy depends on your ability to modify stuff as needed to fit, for me its no big deal, converted a guys gen 1 stg 2 velocity kit to fit his gen 2 only a couple of months ago , but if you don't have the experiance in fabrication and the tools to do it your probably better off selling it or trading it in on the upgrade
Call RCC and see what your costs will be like , i would expect to get $25-2800 for a good condition complete s/h ghetto with pumps, lines, fmu, and pc in a private sale